Siemens 3AH Series Instructions Manual page 36

Appendix
Table A-1 b
Type 3AH Circuit Breaker Ratings (New "Constant kAR Rating Basis)
ANSI C37.04-1999 Standard Rating Structure for AC High-Voltage Circuit Breakers
AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis- Preferred Ratings and Related Required Capabilities
ANSI C37.06-2000
ANSI C37.09-1999 Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis
ANSI C37.010-1999 Application Guide for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis
Rated Values
Maximum Design Voltage ( V ) ' "
Voltage Range Factor ( K ) "
Power Frequency
Withstand
Voltage Levels
Lightning
Continuous "
)
Short-Circuit ( I
" �
I nterrupting Time
(Y )
Permissible Tripping Delay
Max. Sym Interrupting ( I )
%
de Component
Short-Time Current ( I ) (3 seconds)
&
Closing Latching (Momentary)
&
Closing Latching (Momentary)
Peak ( 2.6 x I )
Footnotes
1. Maxi m u m volta ge for which the circuit breaker is designed, and the upper l i m it for operation.
2. K is l isted for i nformational pu rposes on ly. For circuit breakers rated o n a " kA basis;'the Voltage Range Factor is 1.0.
3. 3000FC indicates that fan cooling may be required i n the switchgear structure to achieve this rating.
4 . A I I values apply to polyphase and l ine-to-line faults.
5. Standard duty cycle is 0 - 0.3sec - CO - 1 5sec - CO.
Units
5-3AH- 5-3AH- 5-3AH- 7-3AH-
40
31 50
4.7 6
kV rms 4.76 4.76
- -
1.0 1.0 1.0
19
kV rms 19 19
kV crest
60 60 60
1200 1200
1200
A rms
2000 2000
2000
3000FC 3000FC 3000FC
kA rms-
40
50
31.5
83 83 83
ms
5 5 5
Cycles
2 2
2
Sec
kA rms-
40
31.5 50
%
47 47
47
40
kA rms 31.5 50
kA rms
62 78
49
kA peak 104
82 130
Circuit BreakerT ype
1 5-
1 5-
1 5-3AH- 1 5-3AH-
3AH- 3AH-
40 25
31
20
8.25 1 5.0 1 5.0 1 5.0 1 5.0
1.0 1.0 1.0 1.0
36 36
36 36
95
95 95 95
1200 1 200
1200 1 200 1200
2000 2000
2000
2000 2000
40 20 25 31.5
83 83 83 83
5 5 5 5
2 2 2
2
40
20 25 31.5
47
47 47 47
40
20 25 31.5
62 39 49
31
52
104 65 82
38-3AH-
1 5-3AH-
31.5
50
40
1 5.0 38.0
1.0 1.0 1.0
36
36 80
95
95 150
1 200 1200
2000 2000
3000FC
40
31.5
50
83 83
83
5 5
5
2
2 2
40 50 31.5
47 47 47
40
50 31.5
62
78 49
104 130 82
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